Permissible explosives tested prior to January 1, 1911 and precautions to be taken in their use
By: by Clarence Hall.
Series: U.S. Bureau of Mines. Miners' circular ;; 2
Publisher: Govt. Print. Off.
Published: 1911
Place of publication: Washington
Language: eng
Number of pages: 12
Subjects: Explosives.; Coal mines and mining -- Explosives.
Notes: "Publications on mine accidents and explosives": p. 12.
At head of title: Department of the Interior. Bureau of mines.